264890 has 8 divisors (see below), whose sum is σ = 476820. Its totient is φ = 105952.

The previous prime is 264889. The next prime is 264893. The reversal of 264890 is 98462.

It can be written as a sum of positive squares in 2 ways, for example, as 253009 + 11881 = 503^2 + 109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 264890.

It is not an unprimeable number, because it can be changed into a prime (264893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13235 + ... + 13254.

2²⁶⁴⁸⁹⁰ is an apocalyptic number.

264890 is a deficient number, since it is larger than the sum of its proper divisors (211930).

264890 is a wasteful number, since it uses less digits than its factorization.

264890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26496.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 264890 is about 514.6746545149. The cubic root of 264890 is about 64.2226942668. Note that the first 3 decimals are identical.

The spelling of 264890 in words is "two hundred sixty-four thousand, eight hundred ninety".